D.C. area forecast: Another beautiful July day before our muggier weekend

Today’s Daily Digit

A somewhat subjective rating of the days weather, on a scale of 1 to 10.

9
Like Thurs, with maybe a hint more summer. Low humidity makes midday a breeze, given enough sunscreen!

Express Forecast

Today: Mainly sunny, warmer. Highs: 80-86.

Tonight: Slowly increasing humidity. Lows: Mid-60s to around 70.

Tomorrow: More clouds, humidity. Highs: Shower/Storm? 83-89.

Sunday: Muggy, somewhat cloudy with storms, showers. Highs: 80s.

FORECAST IN DETAIL

If you want summer to keep calm and carry on, you may not have much more “calm” left. As muggier dew points begin their incursion into our region again tonight and tomorrow for their seemingly inevitable summer return, so returns our shower/storm threat. A few spots could threaten the 90-degree mark south of town this weekend, but even more of us may have heavy downpours. Get outside while the getting is good!

Today (Friday): More sun than clouds, very acceptable levels of humidity, light northwesterly breeze, and barely-warmer temperatures. On the whole, a second “wow” day is on tap! Pegging the temperatures is the only (small) challenge, with most of us seeing 80 degrees fairly easily. Mid-80s still seem plausible, but may be relegated to locations south of town if we see a patch of broken cloud cover around DC during early afternoon. Confidence: Medium-High

Tonight: Dang if those in-demand outdoor tables won’t be easy to attain quickly for dinner again. Skies may mix with a few clouds but no precipitation worries for us. Low temperatures slowly head toward the 70-degree mark downtown and mid-to-upper 60s outside the Beltway. Light south breezes may be felt from time to time (and combine with some clouds to hold higher our slightly warmer overnight lows). Confidence: High

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…

Tomorrow (Saturday): Seems eerily familiar and July-like with increased humidity and less-clear skies. Here comes, too, pop-up afternoon showers with some thunder possible (20%-30% chance) as well. High temperatures should still make it into the mid-80s for many of us, perhaps upper 80s south of town, in sunnier spots. South breezes may be a bit more noticeable at 5-10 mph. Confidence: Medium-High

Tomorrow night: Mainly cloudy, and sunset could be obscured as showers and storms (30-40% chance) could continue past diner time. Low temperatures only get down into the lower 70s downtown, perhaps upper 60s in the “luckier” suburbs. Confidence: Medium

Sunday: Right now, it’s not looking super ideal for outdoorsy folks as an ambitious, moist cold front attempts to set off a good deal of showers and storms (60-70% chance), especially into the afternoon. There should still be extended drier times if you plan accordingly. High temperatures may struggle a bit, yet still get into the muggy mid-80s. If the front dries out more than I currently expect, and sunshine dominates the afternoon, upper 80s to around 90 might be possible. Main threat from thundershowers and storms could be heavy downpours, so stay alert near low-lying areas. Confidence: Medium

A LOOK AHEAD

Sunday night: Continued showers and storms (40-50% chance) may threaten more heavy downpours. Under mostly cloudy and muggy conditions, low temperatures again don’t cool off too much, into the mid-60s to around 70. But if the front manages to come through several hours before sunrise, we could subtract a few additional degrees. Confidence: Low-Medium

Monday’s weather hinges on the front fully clearing our area, and presumably giving us mostly sunny skies. Humidity levels may even decline to comfortable levels. Briefly. High temperatures in the mid-to-upper 80s are possible. But sunny spots south of town are more likely to be the warmest spots. Confidence: Medium

Tuesday looks pretty sunny and still not terribly oppressive—just warm. High temperatures in the mid-80s to around 90 is… not unexpected this time of year, I suppose. There may also be a 10% chance of shower or thunderstorm. Confidence: Low-Medium

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Heat Tracker

48
90-degree days year-to-date
Yearly Average
36
Record Most
67 (1980,2010)
Record Fewest
7 (1886,1905)
Last Year
24

At a Glance

Thu.

-- /95°
Drop 30%

Fri.

thunderstorms
76° /90°
Drop 40%

Sat.

partlycloudyday
71° /82°

Sun.

partlycloudyday
69° /83°

Mon.

partlycloudyday
71° /89°

Tue.

thunderstorms
72° /90°
Drop 20%
National Airport
Dulles
BWI

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A. Camden Walker · July 26, 2013

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